The Screw,close Tolerance, cataloged under National Stock Number 5305-01-130-9017, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 19 specifications, cited from the U.S. Government catalog. The record lists 6 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 5 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-130-9017 |
| Primary Part Number | ST3M732-4L8 |
| Item Name | Screw,close Tolerance |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Finish | 32.0 MICROINCHES THREADS |
| Surface Finish | 32.0 MICROINCHES GRIP |
| Fastener Length | 0.911 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | PS13143,TY 2,CL 3 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL |
| Thread Length | 0.401 INCHES MINIMUM AND 0.451 INCHES MAXIMUM IN |
| Material Document and Classification | NAS621 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Grip Length | 0.490 INCHES MINIMUM AND 0.510 INCHES MAXIMUM IN |
| Grip Diameter | 0.2485 INCHES MINIMUM AND 0.2495 INCHES MAXIMUM IN |
| Surface Treatment | ALUMINUM OVERALL |
| Internal Drive Style | HIGH-TORQUE |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 28 |
| Material | TITANIUM ALLOY OVERALL |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Head Diameter | 0.456 INCHES MINIMUM AND 0.508 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ST3M732-4L8 PRIMARY | Huck International, Inc (USA) |
| ST3M732-4L8 PRIMARY | Hi-Shear Corporation (USA) |
| ST3M732-4L8 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| HT4056-4-8A | Huck International, Inc (USA) |
| ST3M732-4L8 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| HT4056-4-8A | Hi-Shear Corporation (USA) |
| Reference | Meaning |
|---|---|
| ST3M732-4L8 | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
| ST3M732-4L8 | 3/2 Design control — primary reference U.S. Government activity |
| HT4056-4-8A | 5/2 Secondary reference U.S. Government activity |
| HT4056-4-8A | 5/2 Secondary reference U.S. Government activity |
| 10115259 | 6/9 Informative reference only Nimikkeistokeskus Ncb Finland |
NSN 5305-01-130-9017 is a Screw,close Tolerance, manufactured by Huck International, Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-130-9017 has 6 manufacturer part numbers on file: ST3M732-4L8 (Huck International, Inc), ST3M732-4L8 (Hi-Shear Corporation), ST3M732-4L8 (Sps Technologies, Llc Dba PB Fasteners), HT4056-4-8A (Huck International, Inc), ST3M732-4L8 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc) and 1 more.
Key specifications for ST3M732-4L8: Surface Finish: 32.0 MICROINCHES THREADS; Surface Finish: 32.0 MICROINCHES GRIP; Fastener Length: 0.911 INCHES MINIMUM AND 0.941 INCHES MAXIMUM IN; Surface Treatment Document and Classification: PS13143,TY 2,CL 3 FSCM 76301 MFR REF SINGLE TREATMENT RESPONSE OVERALL. 19 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.